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Combination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13

2020Journal article Restricted access
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dc.contributor.authorOliveira, Dulce
dc.contributor.authorDesprat, Stéphanie
dc.contributor.authorYin, Qiuzhen
dc.contributor.authorRodrigues, Teresa
dc.contributor.authorNaughton, Filipa
dc.contributor.authorTrigo, Ricardo M.
dc.contributor.authorSu, Qianqian
dc.contributor.authorGrimalt, Joan O.
dc.contributor.authorAlonso-Garcia, Montserrat
dc.contributor.authorH L Voelker, Antje
dc.contributor.authorAbrantes, Fatima
dc.contributor.authorSánchez Goñi, Maria Fernanda
dc.date.accessioned2020-11-18T11:53:28Z
dc.date.available2022-11-01T01:30:16Z
dc.date.issued2020
dc.description.abstractMarine Isotope Stage (MIS) 13, similar to 533-478 ka, has received particular attention due to the unexpected enhancement of monsoon systems under a cool climate characterized by lower atmospheric CO2 and larger ice volume than many other interglacials. Key questions remain about its regional expression (intensity, climate variability, length), and underlying forcing factors, in particular at the mid-latitudes. Here we examine the SW Iberian vegetation, terrestrial climate and sea surface temperature (SST) variability during MIS 13 by combining pollen and biomarker data from IODP Site U1385 with climate-model experiments. We show, for the first time, that despite strong precessional forcing, MIS 13 stands out for its large forest expansions with a reduced Mediterranean character alternating with muted forest contractions, indicating that this stage is marked by a cool-temperate climate regime with high levels of humidity. Results of our data-model comparison reveal that MIS 13 orbitally driven SW Iberian climate and vegetation changes are modulated by the relatively strong ice-sheet forcing. We find that the Northern Hemisphere ice-sheets prescribed at the MIS 13 climate optimum reinforce the insolation effect by increasing the tree fraction and both winter and summer precipitation. We propose that the interactions between ice-sheets and major atmospheric circulation systems may have resulted in the persistent influence of the mid-latitude cells over the SW Iberian region, which led to intensified moisture availability and reduced seasonality, and, in turn, to a pronounced expansion of the temperate forest.pt_PT
dc.description.sponsorshipIF/01489/2015, SAICT-45-2017-02, WARM WORLDS: 29897, 29029, UIDB/04326/2020, CEECIND/02208/2017, WarmWorld-PTDC/CTA-GEO/29897/2017, IF/01500/2014, PTDC/MAR-PRO/3396/2014pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.quascirev.2020.106573pt_PT
dc.identifier.issn0277-3791
dc.identifier.urihttp://hdl.handle.net/10400.1/14831
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectMid-Brunhes eventpt_PT
dc.subjectInterglacial MIS 13pt_PT
dc.subjectMediterranean vegetationpt_PT
dc.subjectModel-data comparisonpt_PT
dc.subjectInsolationpt_PT
dc.subjectIce-sheetspt_PT
dc.titleCombination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FAAC-CLI%2F100157%2F2008/PT
oaire.citation.startPage106573pt_PT
oaire.citation.titleQuaternary Science Reviewspt_PT
oaire.citation.volume247pt_PT
oaire.fundingStream5876-PPCDTI
person.familyNameOliveira
person.familyNameRodrigues
person.familyNameNaughton
person.familyNameAlonso-Garcia
person.familyNameVoelker
person.familyNameAbrantes
person.givenNameDulce
person.givenNameTeresa
person.givenNameFilipa
person.givenNameMontserrat
person.givenNameAntje
person.givenNameFatima
person.identifierR-001-TTY
person.identifierR-000-JPJ
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person.identifier.orcid0000-0002-3055-9396
person.identifier.orcid0000-0002-0241-2178
person.identifier.orcid0000-0001-6465-6023
person.identifier.orcid0000-0002-9110-0212
person.identifier.ridH-9855-2018
person.identifier.ridG-2912-2013
person.identifier.ridE-7659-2013
person.identifier.ridC-5427-2012
person.identifier.ridB-5985-2013
person.identifier.scopus-author-id56688169500
person.identifier.scopus-author-id7004330274
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person.identifier.scopus-author-id51565655800
person.identifier.scopus-author-id8784446000
person.identifier.scopus-author-id16030759200
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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